Frederick j



(No Model.)

F. J. HUBBARD.

VAPOR STOVE.

No. 387,786. .Patented Aug. 14, 1888.v

Nv PETERS. Pnnuwnwgmpher. Wasi-mgm, 11C,

llinrrnn STATES PATENT @reiten FREDERICK J'. I'IUBBARD, OF CHICAGO, ILLINOIS, ASSICNOR TO THE ADAMS VESTLAKE MANUFACTURING COMPANY, OF SAME PLACE.

VAPO R-STOVE.

SPECIFICATION forming part of Letters Patent No. 387,725, dated August 14, 1888.

A ppliratiou Iiled November fi, 1896.

To @ZZ whom it may concern:

Be it known that I, FREDERICK J. Hun 'nl-IRD, oi Chicago, in the county ol' Cook and State of Illinois, have invented certain' new 45 and useful Improvements in Vapor-Stoves; and I do hereby declare that the following is n. full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the ietters of reference marked 1o thereon, which form apart of this specification.

This invention relates to gravity oil-feeding devices of vapor-stoves, and more particularly to those oilfeeding devices in which the oil- I 5 supply tank is lowered from its elevated working position to cut off the oil-supply to the burner when the tank is being lled.

lThe primary object of the invention is to provide a means for cutting off the outward 2o passage for oil from the tank to the burners by the descending movement of the tank or its pipe, so that when the tank is raised after being lowered the oil will not tlow to the burners unless the attendant shall first reopen said passage.

Another object of the invention is to provide for the outflow of oil from the burner feed-pipe to the tank when the latter is lowered, while also providing for the closing of 33 the passage by which oil may escape from the tank to the burner feed-pipe when the tank is elevated, as above stated.

To these ends my invention consists in the matters hereinafter set forth, and pointed out 3,5 in the appended claims.

Referring to the drawings, Figure l is a transverse vertical section of a vapor-stove having the well-known lay-down 7 tank and provided with my improvements. The pivio oted stand-pipe leading downward from the tank is seen upon the end of the stove remote from the eye, and the tank itselfI is omitted. Fig. 2 is a fragmentary front side View of the part ol the stove shown in Fig. l and an external view ofthe parts concerned in my improvements. Fi 3 is a vertical section ofthe pipes and connections concerned in my improvement. Fig. iis a similar section of a modification.

A represents a vapor-stove top, and A A the uprights of the stoveframe.

Serial Ne4 Jlell (No model.)

E is a horizontal oil-supply pipe running to or beneath the burner or burners.

B is a branch of the pipe B, leading back to convenient pointfor the attachment ofthe pivoted stand-pipe, upon which the nii-supply tank (not shown) is supported.

B2 is a branch leading from the rear end of B', parallel with B, and having immediate jointed connection with the stand-pipe. 6o

C is thestand-pipe,pivotally connected with the pipe BZ and adapted to be tipped forwardly far enough to bring the tank on the upper end thereof below the level of the burners, which are commonly near the level of the stove-top A.

C is a guide-bar for the pivoted pipe C.

As heretofore constructed the communication between the pivotal stand-pipe C and the pipe B2 has been continually open. In that case the oil flows back from the burners toward 7C the tank when the latter is lowered; but it also iiows from the tank to the burners again as soon as the tank is raised. In the construe tion herein described the passages conveying` oil from the tank to the burners is closed upon the descent oi' the pipe C, and it remains closed after the pipe C is raised. In connection with this construction,provision is also made for the backdow of oil from the burnerstoward the tank, notwithstanding the clos- 8o ure of the passage for outflow from the tank just referred to.

Referring to Figs. 2 and 3, D is a coupling into which the stand-pipe C is screwed, and which works upon the pipe B2 as a horizontal 85 axis. Said pipe B2 is preferably reduced at B, and is provided with a collar or shoulder, D4, over which the inner end of the coupling D is constructed to tit, as seen in Fig. 3, and between which collar and the coupling D is inserted a packing, I). The coupling D is forced inwardly toward the collar B4 by a suitable nut, B5, which confines an interposed packing and washer, B, so that the j ointformed by said coupling D with the pipe Bi and its extension is tight enough to prevent the escape of oil. The reduced extremity of the pipe BL is drilled inwardly from its end toward the main chamber of said pipe, leaving a diaphragm, through which is provided a Ioo passage, b. rIhe interior of the extension B3 of the pipe B2 is provided with an interior sage b.

fast thread, in which is fitted a corresponding screw, e, upon a stern, E. This stem extends Outward through a stufting-bOX, E, and atits inner end is formed to tit and close the pas- Leading upwardly from the space occupied by the stem E is a passage, b2, and through the pipe B2 and within the coupling D is a passage (indicated by dotted line at b, but which is, in fact, on the front side of the pipe) which is cut away instead of through the rear portion of the pipe, which is shown. These two 'passages may be placed in other positions not in line with each other. From the bottom of the recess d in the coupling D, into which recess the pipe C is secured, are drilled two holes, d d2, one of which, d2, is in continuation with the passage b2 when the pipe C is raised, and the other of which, d', is in line with the hole b3 when the pipe C is lowered. Upon the Outer end of the valve-stem E is secured a crank arm or lever, F, which is directed into position in front of the pipe C, as more plainly shown in Fig. 2. In lowering the pipe C said pipe therefore strikes the lever F and rotates the stem E. Said stem, being provided with the fast screw e, is turned against its seat in the outer end of the passage b' and closes said passage. The lever F being entirely unconnected with the pipe C, said pipe may be raised into its vertical position without retracting the valve E, and the passage b therefore remains closed, and no liquid will flow to the burners from the tank until the lever F is thrown and the valve retracted by the attendant.

By the lowering of the pipe C the passage d', leading therefrom through the coupling D, is, as stated, brought into line with the passage ba, and therefore in the lowered position ofthe tank and its pipe C liquid may flow outwardly from the pipe B2 into the tank-pipe C, and the liquid will therefore be withdrawn from the burners, extinguishing the flame precisely as in the case of the ordinary construction heretofore employed; but said passage al does not give outlet for the oil from the tank into the pipe B2, because in lifting the pipe C the passage d is raised above its point of coincidence with the passage l3 and has no further communication with theinteriorofsaid pipe B2.

Fig. 4 is merely a modification of the rnechanics of the coupling D, showing a taper on the pipe B2 in place of the collar and outer shoulder. To compensate for wear of t-he tapered plug B and of the inner surface ofthe coupling D, the passage b2 is made somewhat larger or elongated, so that it will be in communication with the passage cl2 after such wear of the parts.

I am acquainted with the construction set ,forth in the patent to Davis,No.2S7,9ll,dated November 6, 1883, in which the tank-pipe is rigidlyconnected with the horizontal oil-pipe, and the latter is mounted rotatably in the stove-frame for the purpose of tilting the also rigidly-connected burner-pipes from a vertical to a horizontal position in lowering the tank, and in which the needle-valve in the burnerpipe is provided with a lever that strikes against a stationary projection of the frame in the vibration ofthe burner-pipe, so as tO close said needle-valve, and thus extinguish the burner and prevent escape of oil therefrom when the tank-pipe islowered for the purpose of filling the tank. This is not my invention or construction. In my construction the burner-pipes and the horizontal oil-pipe lead ing thereto are permanently fixed and nonrotatable and the tank-pipe alone is pivoted and movable. My valve, moreover, is located in a stationary or non-rotatable part of the pipe, and the lever of said valve is arranged to projectinto the path of the pivoted tankpipe.

I claim as my invention- 1. The combination, with a nonrotating horizontal oil-pipe of a vapor-stove leading to the burner or burners, and a tank-pipe pivoted to the non-rotating pipe and leading from an elevated oil-supply tank, of a valve arranged in one of said pipes and having its movable part provided with a projection or lever arranged in position to be engaged for the closing Of the valve in the swinging movement of the tank -pipe, substantially as described.

2. The combination of an oil-pipe leading to a burner or burners, apipe pivoted thereon leading from an oil-supply tank, and a valve 'for cutting off the flow of oil from the tank toward the burner, the oil-pipe and the tankpipe being severally provided in their joint with passages which coincide to form a continuous passage for the backtlow of oil from the oil-pipe tothe tank-pipe when the latter is depressed, substantially as described.

3. The combination, with the tank-pipe C and pipe B2, having passages b', b2, and biot a coupling,D,rigid with the pipe C,but rotatably supported on the pipe B2, and provided with passages d (Z2, a valve for closing passage b', and a lever connected with said valve arranged inthe path of the pipe C, substantially as and for the purpose set forth.

In testimony that I claim the foregoing as my invention I affix my signature in presence of two witnesses.

FREDERICK J. HU BBARD.

XVitnesses:

M. E. DAYTON, C. CLARENCE POOLE.

IOO

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